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ryujinx-final/Ryujinx.HLE/Loaders/Npdm/Npdm.cs

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using Ryujinx.HLE.Exceptions;
using Ryujinx.HLE.Utilities;
using System.IO;
using System.Text;
namespace Ryujinx.HLE.Loaders.Npdm
{
//https://github.com/SciresM/hactool/blob/master/npdm.c
//https://github.com/SciresM/hactool/blob/master/npdm.h
//http://switchbrew.org/index.php?title=NPDM
class Npdm
{
private const int MetaMagic = 'M' << 0 | 'E' << 8 | 'T' << 16 | 'A' << 24;
public bool Is64Bits { get; private set; }
public int AddressSpaceWidth { get; private set; }
public byte MainThreadPriority { get; private set; }
public byte DefaultCpuId { get; private set; }
public int SystemResourceSize { get; private set; }
public int ProcessCategory { get; private set; }
public int MainEntrypointStackSize { get; private set; }
public string TitleName { get; private set; }
public byte[] ProductCode { get; private set; }
public ACI0 ACI0 { get; private set; }
public ACID ACID { get; private set; }
public Npdm(Stream Stream)
{
BinaryReader Reader = new BinaryReader(Stream);
if (Reader.ReadInt32() != MetaMagic)
{
throw new InvalidNpdmException("NPDM Stream doesn't contain NPDM file!");
}
Reader.ReadInt64();
//MmuFlags, bit0: 64-bit instructions, bits1-3: address space width (1=64-bit, 2=32-bit). Needs to be <= 0xF.
byte MmuFlags = Reader.ReadByte();
Is64Bits = (MmuFlags & 1) != 0;
AddressSpaceWidth = (MmuFlags >> 1) & 7;
Reader.ReadByte();
MainThreadPriority = Reader.ReadByte(); //(0-63).
DefaultCpuId = Reader.ReadByte();
Reader.ReadInt32();
//System resource size (max size as of 5.x: 534773760).
SystemResourceSize = EndianSwap.Swap32(Reader.ReadInt32());
//ProcessCategory (0: regular title, 1: kernel built-in). Should be 0 here.
ProcessCategory = EndianSwap.Swap32(Reader.ReadInt32());
//Main entrypoint stack size.
MainEntrypointStackSize = Reader.ReadInt32();
byte[] TempTitleName = Reader.ReadBytes(0x10);
TitleName = Encoding.UTF8.GetString(TempTitleName, 0, TempTitleName.Length).Trim('\0');
ProductCode = Reader.ReadBytes(0x10);
Stream.Seek(0x30, SeekOrigin.Current);
int ACI0Offset = Reader.ReadInt32();
int ACI0Size = Reader.ReadInt32();
int ACIDOffset = Reader.ReadInt32();
int ACIDSize = Reader.ReadInt32();
ACI0 = new ACI0(Stream, ACI0Offset);
ACID = new ACID(Stream, ACIDOffset);
}
}
}